using Godot;
using System;
using System.Linq;
using System.Text.Json;

public static class Serializer
{
    public static string CreateGameJson(game g, ExportSettings es)
        => JsonSerializer.Serialize(CreateGameObject(g, es));
    private static SerialGame CreateGameObject(game g, ExportSettings es)
        => new()
        {
            Rows = g.GetNode("%RowContainer").GetChildren().OfType<row>()
                .Select(r => RowToSerial(r, es)).ToArray(),
            UnassignedCards = g.GetNode("%UnassignedCardContainer").GetChildren()
                .OfType<card>().Select(c => CardToSerial(c, es)).ToArray(),
        };
    private static SerialRow RowToSerial(row r, ExportSettings es)
        => new()
        {
            Color = new(r.RowColor),
            Cards = r.Cards.Select(c => CardToSerial(c, es)).ToArray(),
            Text = r.RowText
        };
    private static SerialCard CardToSerial(card c, ExportSettings es)
    {
        byte[] imData;
        var i = c.GetTexture()?.GetImage();
        if (i is Image img)
        {
            if (es.ScaleImages)
            {
                Image copy = new();
                copy.CopyFrom(img);
                copy.Resize(500, 500);
                imData = copy.SaveWebpToBuffer(true);
            }
            else
                imData = img.SaveWebpToBuffer(false);
        }
        else
            imData = Array.Empty<byte>();
        return new()
        {
            Text = c.CardName,
            Image = new()
            {
                DataWebp = imData,
                StretchMode = c.GetStretchMode(),
            },
        };
    }
    public static void LoadFromSerial(game g, string jsonString)
    {
        var sg = JsonSerializer.Deserialize<SerialGame>(jsonString)
            ?? throw new Exception("Failed to deserialize game");
        g.Clear();
        using var context = card.MakeContext(g.GetTree());
        foreach (var r in sg.Rows)
            g.AddRow(r.ToRow(g.GetTree()));
        foreach (var c in sg.UnassignedCards)
            g.AddUnassignedCard(c.ToCard(g.GetTree()));
        g.PropogateCardSize();
    }
}